Technical Development
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Mapping the Epoch of Reionization with C+ Line Tomography

Caltech Campus PI: James J. Bock

JPL PI: Charles M. Bradford

2015 Technical Development Progress Report (pdf)

The First Billion Years 2010-2011 KISS workshops identified new experimental methods for probing the Epoch of Reionization (EoR), the cosmological epoch when the first stars and galaxies formed. The technical program will develop the technological and scientific case for the Tomographic Ionized-carbon Mapping Experiment (TIME), a ground-based instrument designed to probe the EoR with [CII] mapping. KISS funding will be used to develop the key technologies and theoretical studies needed to seed major NSF funding for constructing the full experiment. This program develops novel millimeter-wave superconducting spectrometer modules that offer a large reduction in the volume and mass, scaling to large focal plane formats due to their lithographic fabrication. A successful demonstration of spectrometer technology with background-limited detectors will be a key development for TIME, but also provides the base technology needed for a multi-object spectrograph on CCAT. The lithographed "SuperSpec" approach would be advantageous for BLISS, a spectrograph proposed for the cryogenic SPICA space telescope under development in Japan. We devote a component of these funds for theoretical studies to further optimize the scientific case for [CII] EoR tomography, including studies of foreground removal in joint 21 cm observations, and choice of aperture diameter and spectral resolution. We will also advance the theoretical case for Lyα EoR line mapping, which presents an exciting opportunity for specialized space-borne observations with a small infrared telescope.

For questions contact: James Bock, Charles Bradford or Michele Judd.

James Bock

Caltech Campus PI James Bock

Charles Bradford

JPL PI Charles Bradford